CN102891290B - Silicon carbon composite material, lithium ion battery and negative pole piece thereof - Google Patents
Silicon carbon composite material, lithium ion battery and negative pole piece thereof Download PDFInfo
- Publication number
- CN102891290B CN102891290B CN201210231636.8A CN201210231636A CN102891290B CN 102891290 B CN102891290 B CN 102891290B CN 201210231636 A CN201210231636 A CN 201210231636A CN 102891290 B CN102891290 B CN 102891290B
- Authority
- CN
- China
- Prior art keywords
- composite material
- carbon
- pole piece
- base composite
- battery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a silicon carbon-based composite material, a lithium ion battery and a negative pole piece thereof. The silicon carbon-based composite material is manufactured by the following steps of: adding graphene powder into dilute acid, stirring and ultrasonically dispersing to form a single-layer scattered graphene solution; adding a silicon nanomaterial into the solution, and performing ball-milling to form a stable suspension; and filtering the stable suspension to obtain a filtrate, washing and drying the filtrate to obtain the silicon-carbon-based composite material. By the silicon carbon-based composite material, the lithium ion battery and the negative pole piece thereof, the silicon carbon-based composite material has high energy density, excellent lithium insertion characteristic and high safety performance, and the material is unique in structure and has a reserved expansion gap; and therefore, a battery coated with the silicon carbon-based composite material is low in expansion ratio, high in capacity, high in cyclicity and long in service life.
Description
Technical field
The present invention relates to cell art, especially relate to a kind of Si-C composite material, lithium ion battery and cathode pole piece thereof.
Background technology
Lithium ion battery, owing to having high voltage, high-energy-density, long circulation life and the feature such as environmentally friendly, becomes the supporting power supply of ideal of portable electronic, mobile product, electric automobile.Current lithium ion battery negative material adopts carbon-based material mostly, such as carbonaceous mesophase spherules, graphite, organic RESEARCH OF PYROCARBON, hard carbon etc.Carbon-based material has good reversible removal lithium embedded performance, but its reversible capacity low (theoretical capacity 372mAh/g), and intercalation potential lower (0.25-0.05V vs.Li+/Li), close to the current potential of lithium metal, in charge and discharge process, easily form Li dendrite, cause safety problem.
Silicon based anode material has high power capacity, high discharge platform, is study hotspot negative material of new generation, but existing silica-base material in electrochemistry deintercalation along with huge volumetric expansion and inefficient problem first, restrict the extensive use of this material.
Graphene is the new allotrope of the carbon of discovered in recent years, has the two-dimension plane structure arranged with hexagonal network form by carbon atom.Therefore have good mechanics, electricity, optics and thermal property, exploitation graphene/silicon carbon composite has broad application prospects in field of lithium ion battery.
Summary of the invention
Main purpose of the present invention is to provide a kind of Si carbon-base composite material, cathode pole piece and lithium ion battery and cathode pole piece thereof, suppresses battery in the generation of alloying process volumetric expansion, obtains the lithium ion battery that cycle performance is excellent.
The present invention proposes a kind of Si carbon-base composite material, is applied to lithium ion battery, and described Si carbon-base composite material is prepared from by following steps, each component that following steps relate to by weight:
Step one, concentration 0.5-2 part graphene powder being added 2000 parts are in the diluted acid of 0.05-1 mol/L, stir 2-72 hour, ultrasonic disperse 5-60 minute, obtain Monolayer Dispersion graphene solution;
Step 2, in above-mentioned Monolayer Dispersion graphene solution, add 0.1-1 part silicon nano material, add particle diameter is 0.5-10 millimeter zirconium ball simultaneously, and zirconium ball and mixed solution weight ratio are 1:5, ball milling 2-24 hour, forms stable suspersion solution;
Step 3, the stable suspersion solution of gained to be filtered, obtain filtrate, to described filtrate washing, be then placed under vacuum bad border dry, obtain Si carbon-base composite material;
Described silicon nano material comprises one or more of following component: one-dimensional nano line, bidimensional nanobelt.
Preferably, described diluted acid comprises one or more of following component: hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, organic acid.
Preferably, described Si carbon-base composite material, the stirring adopted in step one is magnetic agitation, and speed of agitator is 10-1000 rev/min.
The present invention separately proposes a kind of lithium ion battery, comprises battery container, is provided with battery in this battery container; Described battery comprises the diaphragm bag of one end open, and diaphragm bag, built with the two-sided cathode pole piece of a band lug, is provided with the two-sided anode pole piece of a band lug between two adjacent diaphragm bags; One side anode pole piece is respectively equipped with outside the diaphragm bag at battery two ends; The lug of two-sided cathode pole piece is placed in the side of battery, and the lug of one side anode pole piece and two-sided anode pole piece is placed in the opposite side of battery; Described two-sided cathode pole piece top and bottom are provided with the mixed coating including Si carbon-base composite material; The one side that described one side anode pole piece and diaphragm bag are affixed and described two-sided anode pole piece top and bottom are provided with positive electrode coating; Described Si carbon-base composite material is above-described Si carbon-base composite material.
The present invention separately proposes a kind of lithium ion battery negative electrode, comprises the negative current collector of a band lug, and the top and bottom of this negative current collector include the mixed coating of Si carbon-base composite material; Described Si carbon-base composite material is above-described Si carbon-base composite material.
A kind of Si carbon-base composite material provided by the present invention, lithium ion battery and cathode pole piece thereof, described Si carbon-base composite material have excellent conductivity, storage, capacity high, there is certain expansion space; Therefore adopt scribble this Si carbon-base composite layer battery pole piece expansion rate reduce, capacity is high, cyclicity good, long service life.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of lithium ion battery one embodiment of the present invention;
Fig. 2 is the structural representation of the battery in lithium ion battery embodiment of the present invention;
Fig. 3 is the structural representation of the diaphragm bag in lithium ion battery embodiment of the present invention;
Fig. 4 is the structural representation of the two-sided cathode pole piece in lithium ion battery embodiment of the present invention;
Fig. 5 is the structural representation of the two-sided anode pole piece in lithium ion battery embodiment of the present invention;
Fig. 6 is the structural representation of the one side anode pole piece in lithium ion battery embodiment of the present invention;
Fig. 7 is the surface structure schematic diagram of the graphite oxide that in the present invention prepared by embodiment 1;
Fig. 8 is the microstructure schematic diagram of the Si carbon-base composite material that in the present invention prepared by embodiment 1;
Fig. 9 is the cyclic curve figure of the simulated battery that in the present invention prepared by embodiment 1.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
See Fig. 1,2,3,4,5,6, propose a kind of lithium ion battery one embodiment of the present invention, comprise battery container 100, in this battery container 100, be provided with battery 200; Described battery 200 comprises the diaphragm bag 210 of one end open, and diaphragm bag 210, built with the two-sided cathode pole piece 220 of a band lug 221, is provided with the two-sided anode pole piece 230 of a band lug 231 between two adjacent diaphragm bags 210; The one side anode pole piece 240 of a band lug 241 is respectively equipped with outside the diaphragm bag 210 at battery 200 two ends; The lug 221 of two-sided cathode pole piece 220 is placed in the side of battery 200, and lug 241 and the lug 231 of two-sided anode pole piece 230 of one side anode pole piece 240 are placed in the opposite side of battery 200; Described two-sided cathode pole piece 220 top and bottom are provided with the mixed coating including Si carbon-base composite material; The one side that described one side anode pole piece 240 and diaphragm bag 210 are affixed and described two-sided anode pole piece 230 top and bottom are provided with positive electrode coating.
Wherein, described cathode pole piece 250 comprises the negative current collector of a band lug 251, and the described mixed coating containing Si carbon-base composite material is coated on the top and bottom of negative current collector.
The preparation process of the lithium ion battery in above-described embodiment is as follows:
Step one, prepares anode pole piece, cathode pole piece and diaphragm bag;
Step 2, cathode pole piece is put into diaphragm bag, and multiple diaphragm bag that cathode pole piece is housed neatly is stacked together, make the lug of all cathode pole pieces be in the side of battery;
Step 3, between adjacent two diaphragm bags, insert anode pole piece, and make the lug of all anode pole pieces be in the opposite side of battery;
Step 4, outside the diaphragm bag at two ends, stick an one side anode pole piece, the one side making this one side anode pole piece scribble positive electrode coating is affixed with diaphragm bag, and the same side that the lug of one side anode pole piece and the lug of anode pole piece are in, obtain core of lithium ion cell;
Step 5, on core of lithium ion cell rubberizing paper, then top side seal, vacuumize, fluid injection carried out to core of lithium ion cell, leave standstill, change into, partial volume, obtain lithium ion battery.
Wherein, anode pole piece preparation process is: positive electrode active materials of living, conductive carbon s (uper-P), binding agent PVDF mix, and are then coated on the aluminium foil of 16 micron thickness, dries, roll-in, is die-cut into the cathode pole piece of band lug as shown in Figure 1.
Cathode pole piece preparation process is: 95 parts of Si carbon-base composite materials, 2.5 parts of butadiene-styrene rubber breasts (SBR), 1.5 parts of methylcellulose (CMC), 1 part of super-P are joined in appropriate deionized water and be mixed to form uniform mixture, then mixture is coated on the Copper Foil of 9 micron thickness, and by Copper Foil drying, roll-in, be finally die-cut into the cathode pole piece of band lug as described in Figure 1.
Diaphragm bag manufacturing process is: cut barrier film, and the diaphragm bag of three edge-sealing one end open is made on boiling hot limit.
Below that embodiment prepared by Si carbon-base composite material in above-mentioned lithium ion battery
Embodiment 1
Step one, prepare Graphene:
It is in the sulfuric acid of 98% that 10 grams of graphite powders are added 250 ml concns, and under ice-water bath cooling condition, add 30 grams of potassium permanganate formation mixed solutions, stirs 2 hours, afterwards this mixed solution is placed in 95 ± 2 DEG C of water-baths reactions 30 minutes; 1000 ml deionized water are added in said mixture, solution to be mixed add again after naturally cooling to room temperature 50 ml concns be 30% hydrogen peroxide react 10 minutes, generating glassy yellow graphite oxide sediment, is the schematic appearance of the graphite oxide of the present embodiment see Fig. 7, Fig. 7; With the hydrochloric acid of 1 mol/L, sediment is washed, until sulfate radical-free ion in filtrate; Sediment after washing is dried, is then placed in 1000 DEG C of Muffle furnaces, and heat treatment 30 seconds in nitrogen protection atmosphere, make graphite oxide slough oxy radical and stripping of expanding, obtain black graphene powder.
Step 2, prepare Si carbon-base composite material
The graphene powder adding 2 grams of above-mentioned preparations in the watery hydrochloric acid of 2000 milliliter of 0.5 mol/L stirs 72 hours, and ultrasonic disperse 30 minutes forms uniform Monolayer Dispersion graphene solution; 0.5 gram of silicon nanowires is added in above-mentioned Monolayer Dispersion graphene solution, mechanical agitation 30 minutes, then mixed solution is loaded shape celestial body grinding machine, add the zirconium ball that 500 gram particle footpaths are 0.5-10 millimeter, ball milling 4 hours simultaneously, form stable suspersion solution, stable suspersion solution is carried out filtration and obtain sediment, with deionized water washing sediment 3 times, then sediment is dry under being placed in 60 DEG C of vacuum environments, obtains Si carbon-base composite material.Described Si carbon-base composite material has stacked accumulation microstructure, is the microstructure schematic diagram of Si carbon-base composite material prepared by the present embodiment see Fig. 8, Fig. 8.
Performance test
(1), the test of reversible specific capacity and efficiency first
In 250 grams of deionized waters, add the Si carbon-base composite material of 95 grams of above-mentioned preparations, 2.5 grams of butadiene-styrene rubber breast SBR, 1.5 grams of CMC CMC, 1 gram of conductive agent Super-p, stir and form uniform mixture; Mixture is coated on the thick Copper Foil of 9um and makes cathode pole piece, toast 24 hours under this cathode pole piece being placed in 85 DEG C of vacuum environments, control cathode pole piece water content at below 150ppm.
The anode pole piece that the cathode pole piece of upper making, metal lithium sheet are made, polypropylene microporous barrier film, and 1M LiPF
6, the electrolyte that EC:DMC:EMC=1:1:1 (volume ratio) forms is assembled into simulated battery.Then with 0.2mA/cm
2current density, voltage window is 0.02-2.0V, carries out constant current charge-discharge test to simulated battery, and this simulated battery reversible specific capacity and first efficiency are the cyclic curve figure of simulated battery in the present embodiment see table 1 and Fig. 9, Fig. 9.
(2), cycle performance test
With the cathode pole piece of above-mentioned making be negative pole, with LiMn
1/3ni
1/3co
1/3o
2for the active material of anode pole piece, with 1M LiPF
6, EC:DMC:EMC=1:1:1 solution is electrolyte, is that barrier film is made into soft-package battery with microporous polypropylene membrane.With 0.5C constant current constant voltage, cut-ff voltage 4.2V, constant voltage cut-off current 0.05C, leave standstill, with 0.5C constant-current discharge, cut-ff voltage 3.0V, the cycle performance parameter of this soft-package battery be see table 1.
Embodiment 2
The first step, identical with embodiment 1.
Second step, 2000 milliliters, concentration is the graphene powder adding 0.5 gram of above-mentioned preparation in the hydrochloric acid solution of 0.05 mol/L, stir 36 hours, ultrasonic disperse 5 minutes, form uniform Monolayer Dispersion graphene solution; 0.1 gram of silicon nanowires is added in above-mentioned Monolayer Dispersion graphene solution, mechanical agitation 30 minutes, then mixed solution is loaded shape celestial body grinding machine, add the zirconium ball that 500 gram particle footpaths are 0.5-10 millimeter, ball milling 4 hours simultaneously, form stable suspersion solution, stable suspersion solution is carried out filtration and obtain sediment, with deionized water washing sediment 3 times, then sediment is dry under being placed in 60 DEG C of vacuum environments, obtain Si-C composite material, this Si carbon-base composite material has stacked accumulation microstructure.
Performance test
(1), the test of reversible specific capacity and efficiency first
In 250 ml deionized water, add the Si carbon-base composite material of 95 grams of above-mentioned preparations, 2.5 grams of butadiene-styrene rubber breast SBR, 1.5 grams of CMC CMC, 1 gram of conductive agent Super-p, stir and form uniform mixture; Cathode pole piece made by Copper Foil mixture being coated in 9 micron thickness, this cathode pole piece to be placed under 85 DEG C of vacuum environments baking 24 hours, to control cathode pole piece water content at below 150ppm.
The anode pole piece that the cathode pole piece of upper making, metal lithium sheet are made, polypropylene microporous barrier film, and 1MLiPF
6, the electrolyte that EC:DMC:EMC=1:1:1 (percentage) forms is assembled into simulated battery.Then with 0.2mA/cm
2current density, voltage window is 0.02-2.0V, carries out constant current charge-discharge test to simulated battery, and this simulated battery reversible specific capacity and first efficiency are see table 1.
(2), cycle performance test
With the cathode pole piece of above-mentioned making be negative pole, with LiMn
1/3ni
1/3co
1/3o
2for positive pole, with 1MLiPF
6, EC:DMC:EMC=1:1:1 solution is electrolyte, is barrier film, is made into soft-package battery with microporous polypropylene membrane.With 0.5C constant current constant voltage, cut-ff voltage 4.2V, constant voltage cut-off current 0.05C, leave standstill, with 0.5C constant-current discharge, cut-ff voltage 3.0V, the cycle performance parameter of this soft-package battery be see table 2.
Embodiment 3
The first step is identical with embodiment
Second step, at 2000 ml concns be 1.0 mol/L solution in add the graphene powder of 1 gram of above-mentioned preparation, stir 2 hours, ultrasonic disperse 60 minutes, form uniform Monolayer Dispersion graphene solution; In above-mentioned Monolayer Dispersion graphene solution, add the zirconium ball that 0.5 gram of nano silicon particles, 0.5 gram of silicon nanowires and 500 gram particle footpaths are 0.5-10 millimeter, by shape celestial body grinding machine ball milling 4 hours, form stable suspersion solution; Stable suspersion solution is carried out filtration and obtain sediment, with deionized water washing sediment 3 times, dry under then sediment being placed in 60 DEG C of vacuum environments, obtain Si carbon-base composite material.
Performance test
(1), the test of reversible specific capacity and efficiency first
In 250 ml deionized water, add the Si carbon-base composite material of 95 grams of above-mentioned preparations, 2.5 grams of butadiene-styrene rubber breast SBR, 1.5 grams of CMC CMC, 1 gram of conductive agent Super-p, stir and form uniform mixture; Cathode pole piece made by Copper Foil mixture being coated in 9 micron thickness, this cathode pole piece to be placed under 85 DEG C of vacuum environments baking 24 hours, to control cathode pole piece water content at below 200ppm.
The anode pole piece that the cathode pole piece of upper making, metal lithium sheet are made, polypropylene microporous barrier film, and 1MLiPF
6, the electrolyte that EC:DMC:EMC=1:1:1 (percentage) forms is assembled into simulated battery.Then with 0.2mA/cm
2current density, voltage window is 0.02-2.0V, carries out constant current charge-discharge test to simulated battery, and this simulated battery reversible specific capacity and first efficiency are see table 1.
(2), cycle performance test
With the cathode pole piece of above-mentioned making be negative pole, with LiMn
1/3ni
1/3co
1/3o
2for the active material of anode pole piece, with 1M LiPF
6, EC:DMC:EMC=1:1:1 solution is electrolyte, is that barrier film is made into soft-package battery with microporous polypropylene membrane.With 0.5C constant current constant voltage, cut-ff voltage 4.2V, constant voltage cut-off current 0.05C, leave standstill, with 0.5C constant-current discharge, cut-ff voltage 3.0V, the cycle performance parameter of this soft-package battery be see table 2.
Comparative example 4
The first step, identical with embodiment 1.
Second step, identical with embodiment 1.
Performance test
(1), the test of reversible specific capacity and efficiency first
In 250 grams of deionized waters, add the Si carbon-base composite material of 95 grams of above-mentioned preparations, 2.5 grams of butadiene-styrene rubber breast SBR, 1.5 grams of CMC CMC, 1 gram of conductive agent Super-p stir and form uniform mixture; Cathode pole piece made by Copper Foil mixture being coated in 9 micron thickness, this cathode pole piece is carried out drying.
With the cathode pole piece of above-mentioned making be negative pole, with anode pole piece LiMn
1/3ni
1/3co
1/3o
2for positive electrode active materials, polypropylene microporous barrier film, and 1 mol/L LiPF
6, the electrolyte that EC:DMC:EMC=1:1:1 (percentage) forms is made into soft-package battery.
According to common lithium battery coiling around production process, positive/negative plate through winding, drying, fluid injection, seal, change into, partial volume, standing, be made into the soft-package battery of winding-structure.With 0.5C constant current constant voltage, cut-ff voltage 4.2V, constant voltage cut-off current 0.05C, leave standstill, with 0.5C constant-current discharge, cut-ff voltage 3.0V, the cycle performance parameter of this soft-package battery is see table 2.
As from the foregoing: the gram volume of the Si carbon-base composite material therefore synthesized is far above the theoretical capacity of graphite material, and efficiency is higher first, to make cycle performance of battery good.The battery simultaneously adopting this pole piece structure to design is compared common winding-structure cell expansion rate and is obviously reduced, and cycle performance of battery is more excellent.
Above-described embodiment 1-3, and comparative example 4 is prepared hydrochloric acid that Si carbon-base composite material adopts and can one or more of following component be replaced: sulfuric acid, nitric acid, phosphoric acid, organic acid.
Above-described embodiment 1-3, and comparative example 4 is prepared in Si carbon-base composite material, the stirring adopted is magnetic agitation, and speed of agitator is 10-1000 rev/min.
Above-described embodiment 1-3, and comparative example 4 is prepared silicon nano material that Si carbon-base composite material adopts and is comprised one or more of following component: one-dimensional nano line, bidimensional nanobelt, nanoscale twins, this nanoscale twins is single or multiple lift.
Should be understood that; these are only the preferred embodiments of the present invention; can not therefore limit the scope of the claims of the present invention; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Table 1:
Table 2:
Claims (7)
1. a Si carbon-base composite material, is characterized in that, is applied to lithium ion battery, and described Si carbon-base composite material is prepared from by following steps, each component that following steps relate to by weight:
Step one, concentration 0.5-2 part graphene powder being added 2000 parts are in the diluted acid of 0.05-1mol/L, stir 2-72 hour, ultrasonic disperse 5-60 minute, obtain Monolayer Dispersion graphene solution;
Step 2, in above-mentioned Monolayer Dispersion graphene solution, add 0.1-1 part silicon nano material, add particle diameter is 0.5-10mm zirconium ball simultaneously, and zirconium ball and mixed solution weight ratio are 1:5, ball milling 2-24 hour, forms stable suspersion solution;
Step 3, the stable suspersion solution of gained to be filtered, obtain filtrate, to described filtrate washing, be then placed under vacuum bad border dry, obtain Si carbon-base composite material;
Described silicon nano material comprises one or more of following component: one-dimensional nano line, bidimensional nanobelt.
2. Si carbon-base composite material according to claim 1, is characterized in that, described diluted acid comprises one or more of following component: hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, organic acid.
3. Si carbon-base composite material according to claim 1, is characterized in that, the stirring adopted in step one is magnetic agitation, and speed of agitator is 10-1000 rev/min.
4. a lithium ion battery, is characterized in that, comprises battery container, is provided with battery in this battery container; Described battery comprises the diaphragm bag of one end open, and diaphragm bag, built with the two-sided cathode pole piece of a band lug, is provided with the two-sided anode pole piece of a band lug between two adjacent diaphragm bags; One side anode pole piece is respectively equipped with outside the diaphragm bag at battery two ends; The lug of two-sided cathode pole piece is placed in the side of battery, and the lug of one side anode pole piece and two-sided anode pole piece is placed in the opposite side of battery; Described two-sided cathode pole piece top and bottom are provided with the mixed coating including Si carbon-base composite material; The one side that described one side anode pole piece and diaphragm bag are affixed and described two-sided anode pole piece top and bottom are provided with positive electrode coating;
Described Si carbon-base composite material is Si carbon-base composite material according to claim 1.
5. lithium ion battery according to claim 4, is characterized in that, described Si carbon-base composite material is the Si carbon-base composite material described in Claims 2 or 3.
6. a lithium ion battery negative electrode, is characterized in that, comprises the negative current collector of a band lug, and the top and bottom of this negative current collector include the mixed coating of Si carbon-base composite material;
Described Si carbon-base composite material is Si carbon-base composite material according to claim 1.
7. lithium ion battery negative electrode according to claim 6, described Si carbon-base composite material is the Si carbon-base composite material described in Claims 2 or 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210231636.8A CN102891290B (en) | 2012-07-05 | 2012-07-05 | Silicon carbon composite material, lithium ion battery and negative pole piece thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210231636.8A CN102891290B (en) | 2012-07-05 | 2012-07-05 | Silicon carbon composite material, lithium ion battery and negative pole piece thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102891290A CN102891290A (en) | 2013-01-23 |
| CN102891290B true CN102891290B (en) | 2015-07-22 |
Family
ID=47534736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210231636.8A Active CN102891290B (en) | 2012-07-05 | 2012-07-05 | Silicon carbon composite material, lithium ion battery and negative pole piece thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102891290B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104979535A (en) * | 2014-04-03 | 2015-10-14 | 上海空间电源研究所 | Graphene porous nanometer silicon composite material as well as preparation method and application thereof |
| CN108539125A (en) * | 2018-04-20 | 2018-09-14 | 桑顿新能源科技有限公司 | A kind of high-energy density lithium sulphur power battery preparation method and battery |
| CN108428884A (en) * | 2018-04-24 | 2018-08-21 | 盐城师范学院 | A kind of preparation method of sheet layer graphene and silicon electrode material |
| CN109950490B (en) * | 2019-03-21 | 2022-05-03 | 柯良节 | Negative electrode material, preparation method thereof and lithium battery |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2742585Y (en) * | 2004-04-17 | 2005-11-23 | 合肥荣事达集团有限责任公司 | Novel high energy polymer lithium ion cell |
| CN101924211A (en) * | 2010-08-19 | 2010-12-22 | 北京科技大学 | Graphene/silicon lithium ion battery cathode material and preparation method thereof |
| CN102201597A (en) * | 2010-03-26 | 2011-09-28 | 中大工业集团公司 | Production method for polymer lithium ion batteries of high performance and long service life |
| CN102544445A (en) * | 2010-12-29 | 2012-07-04 | 海洋王照明科技股份有限公司 | Preparation method for graphene composite material supporting silicon nanoparticles |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100763891B1 (en) * | 2005-12-01 | 2007-10-05 | 삼성에스디아이 주식회사 | Anode active material and lithium battery using the same |
| EP2104164A4 (en) * | 2006-12-28 | 2012-01-18 | Dow Corning Toray Co Ltd | Porous silicon-containing carbon-based composite material, electrode composed of the same and battery |
| CN101777644A (en) * | 2010-02-05 | 2010-07-14 | 中国科学院新疆理化技术研究所 | Method for preparing carbon-encapsulated magnesium-doped lithium ion battery cathode material lithium titanate |
| CN102447113B (en) * | 2011-12-12 | 2014-08-13 | 南开大学 | Lithium battery with polymer-coated sulfur/carbon composite material as anode |
| CN102496707A (en) * | 2011-12-30 | 2012-06-13 | 天津力神电池股份有限公司 | Preparation method of nano-grade-carbon-clad spinel lithium titanate battery cathode material |
-
2012
- 2012-07-05 CN CN201210231636.8A patent/CN102891290B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2742585Y (en) * | 2004-04-17 | 2005-11-23 | 合肥荣事达集团有限责任公司 | Novel high energy polymer lithium ion cell |
| CN102201597A (en) * | 2010-03-26 | 2011-09-28 | 中大工业集团公司 | Production method for polymer lithium ion batteries of high performance and long service life |
| CN101924211A (en) * | 2010-08-19 | 2010-12-22 | 北京科技大学 | Graphene/silicon lithium ion battery cathode material and preparation method thereof |
| CN102544445A (en) * | 2010-12-29 | 2012-07-04 | 海洋王照明科技股份有限公司 | Preparation method for graphene composite material supporting silicon nanoparticles |
Non-Patent Citations (1)
| Title |
|---|
| Graphene/nanosized silicon composites for lithium battery anodes with improved cycling stability;Hongfa Xiang et al.;《CARBON》;20110109;第49卷(第5期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102891290A (en) | 2013-01-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Mondal et al. | Highly porous NiCo2O4 nanoflakes and nanobelts as anode materials for lithium-ion batteries with excellent rate capability | |
| Liu et al. | Mesoporous NiCo2O4 nanoneedles grown on three dimensional graphene networks as binder-free electrode for high-performance lithium-ion batteries and supercapacitors | |
| Cheng et al. | CeO2 decorated graphene as separator modification material for capture and boost conversion of polysulfide in lithium-sulfur batteries | |
| CN102544502B (en) | Anode and cathode conductive additive for secondary lithium battery, method for preparing conductive additive, and method for preparing secondary lithium battery | |
| Zhang et al. | A facile synthesis of 3D flower-like NiCo2O4@ MnO2 composites as an anode material for Li-ion batteries | |
| Zhu et al. | Rational design of intertwined carbon nanotubes threaded porous CoP@ carbon nanocubes as anode with superior lithium storage | |
| Jin et al. | Hierarchical MnCo2O4 constructed by mesoporous nanosheets@ polypyrrole composites as anodes for lithium ion batteries | |
| CN102306759B (en) | Silicon monoxide composite cathode material for lithium ion battery, and preparation method thereof | |
| CN105576185A (en) | Silicon-carbon composite cathode pole piece of lithium ion battery and preparation method of silicon-carbon composite cathode pole piece | |
| CN111276678B (en) | Single-layer graphene coated FeS2Preparation method and application of carbon nanotube material | |
| CN110233256B (en) | Composite nano material and preparation method thereof | |
| CN114050246A (en) | Micron-sized porous sodium ferrous sulfate/carbon composite cathode material and sodium ion battery or sodium battery prepared from same | |
| CN104934610A (en) | Preparation method of self-supporting flexible composite electrode material used by lithium ion battery | |
| CN106558729B (en) | A kind of lithium ion battery of graphene as anode sizing agent conductive agent | |
| Jin et al. | MFe2O4 (M= Ni, Co) nanoparticles anchored on amorphous carbon coated multiwalled carbon nanotubes as anode materials for lithium-ion batteries | |
| CN104916824A (en) | Tin/oxidized graphene anode material for lithium battery and preparation method thereof | |
| CN103346302A (en) | Lithium battery silicon-carbon nanotube composite cathode material as well as preparation method and application thereof | |
| CN105355877A (en) | Graphene-metal oxide composite negative electrode material and preparation method therefor | |
| CN103560019B (en) | A kind of zinc ion hybrid super capacitor | |
| CN103490050A (en) | Preparation method of porous graphene and applications of finished product thereof | |
| CN102916195A (en) | Graphene-coated copper oxide composite cathode material and method for manufacturing same | |
| CN103606705A (en) | Lithium ion battery and preparation method thereof | |
| CN103236519A (en) | Porous carbon base monolith composite material for lithium ion battery, and preparation method thereof | |
| CN104916823A (en) | Silicon/graphene oxide anode material for lithium battery and preparation method thereof | |
| Li et al. | Architecture and performance of Si/C microspheres assembled by nano-Si via electro-spray technology as stability-enhanced anodes for lithium-ion batteries |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Chen Xingrong Inventor after: Yue Zhichong Inventor after: Yan Lei Inventor before: Wang Tao |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: WANG TAO TO: CHEN XINGRONG YUE ZHICHONG YAN LEI |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180913 Address after: 300000 No. 1506, A block, Wanke city garden, Wang Gang Chang, Hebei District, Tianjin. Patentee after: Han Zhijuan Address before: 518000 Guangdong Shenzhen Longgang District Longcheng Street Longxi community A Industrial Park Patentee before: Shenzhen Oceansun Battery Co., Ltd. |
|
| TR01 | Transfer of patent right |